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Bontekoe, T.H. (author), Neumann, N.M.P. (author), Phillipson, F. (author), Wezeman, R.S. (author)Radar and sonar information processing is a promising application area of quantum computing in the near future. Many use cases in this area can are computational heavy and might benefit greatly from a quantum approach. In this paper, an overview of use cases in this application area is given and scored on quantum readiness, added value and...conference paper 2022
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Tyack, P.L. (author), Benti, B. (author), Foskolos, I. (author), Bort, J. (author), Neves, M. (author), Biassoni, N. (author), Miller, P.J.O. (author)Auditory masking by anthropogenic noise may impact marine mammals relying on sound for important life functions, including echolocation. Animals have evolved antimasking strategies, but they may not be completely effective or cost-free. We formulated seven a priori hypotheses on how odontocete echolocation behavior could indicate masking. We...article 2022
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Isojunno, S. (author), von Benda-Beckmann, A.M. (author), Wensveen, P.J. (author), Kvadsheim. P.H., (author), Frans-Peter A. Lam, (author), Gkikopoulou, K.C. (author), Pöyhönen, V. (author), Tyack, P.L. (author), Benti, B. (author), Foskolos, I. (author), Bort, J. (author), Miguel Neves, M. (author), Biassoni, N. (author), Miller, P.J.O. (author)Auditory masking by anthropogenic noise may impact marine mammals relying on sound for important life functions, including echolocation. Animals have evolved antimasking strategies, but they may not be completely effective or cost-free. We formulated seven a priori hypotheses on how odontocete echolocation behavior could indicate masking. We...article 2021
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Isojunno, S. (author), Wensveen, P.J. (author), Lam, F.P.A. (author), Kvadsheim, P.H. (author), von Benda-Beckmann, A.M. (author), Lopez, L.M. Martín (author), Kleivane, L. (author), Siegal, E.M. (author), Miller, P.J.O. (author)Anthropogenic noise sources range from intermittent to continuous, with seismic and navy sonar technology moving towards nearcontinuous transmissions. Continuous active sonar (CAS) may be used at a lower amplitude than traditional pulsed active sonar (PAS), but potentially with greater cumulative sound energy. We conducted at-sea experiments to...article 2020
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Hartstra, I.E. (author), Salomons, E.M. (author), Colin, M.E.G.D. (author), Prior, M.K. (author)Passive-sonar-performance modelling requires the accurate estimation of the acoustic field for a broad range of frequencies in various environments. In this paper, we assess the suitability of a Gaussian Beam (Bellhop) and Parabolic Equation model (RAM), whereby we focus primarily on computational efficiency. For Parabolic Equation (PE) models...conference paper 2019
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Bosschaart, C. (author)The Royal Netherlands Navy operates a low-frequency active sonar consisting of a combination of a towed sonar source and receiver array in order to detect and classify objects underwater. The operation involves transmitting high power underwater sound towards an object and detecting the echo reflected by the object. Operating a towed source at...conference paper 2019
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Colin, M. (author), Prior, M.K. (author), Beerens, S.P. (author)Detecting sound in the ocean is greatly improved by hydrophone array processing. Until recently, operating large arrays required cumbersome data acquisition systems and processing computers. Thanks to miniaturisation of electronics and improvements in computing power, array size is now limited by practicalities of deploying large physical...conference paper 2019
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Lippert, T. (author), Ainslie, M.A. (author), von Estorff, O. (author)Sound produced by marine pile driving activities poses a possible risk to marine life. The assessment and mitigation of this risk requires a precise prediction of the expected levels. An analytical approach to estimate the radiated sound exposure levels is presented, based on the axial symmetry of the problem, resulting in damped cylindrical...article 2018
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Harris, C.M. (author), Thomas, L. (author), Falcone, E.A. (author), Hildebrand, J. (author), Houser, D. (author), Kvadsheim, P.H. (author), Lam, F.P.A. (author), Miller, P.J.O. (author), Moretti, D.J. (author), Read, A.J. (author), Slabbekoorn, H. (author), Southall, B.L. (author), Tyack, P.L. (author), Wartzok, D. (author), Janik, V.M. (author)Marine mammals may be negatively affected by anthropogenic noise. Behavioural response studies (BRS) aim to establish a relationship between noise exposure conditions (dose) from a potential stressor and associated behavioural responses of animals. A recent series of BRS have focused on the effects of naval sonar sounds on cetaceans. Here, we...article 2018
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von Benda-Beckmann, A.M. (author), Thomas, L. (author), Tyack, P.L. (author), Ainslie, M.A. (author)Passive acoustic monitoring with widely-dispersed hydrophones has been suggested as a cost-effective method to monitor population densities of echolocating marine mammals. This requires an estimate of the area around each receiver over which vocalizations are detected - the "effective detection area" (EDA). In the absence of auxiliary...article 2018
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Lam, F.P. (author), Kvadsheim, P.H. (author), Isojunno, S. (author), Wensveen, P.J. (author), van IJsselmuide, S. (author), Siemensma, M. (author), Dekeling, R. (author), Miller, P.J.O. (author)There has been a significant increase of underwater anthropogenic noise in recent decades, leading to increased background noise levels and more frequent exposure of marine animals to high intensity impulse sounds such as seismic signals and naval sonar. Modern long range anti-submarine warfare surveillance sonars transmit very powerful sound...report 2018
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Lam, F.P. (author), Kvadsheim, P.H. (author), Isojunno, S. (author), van IJsselmuide, S. (author), Wensveen, P.J. (author), Hansen, R.R. (author), Siemensma, M. (author), Sivle, L.D. (author), Kleivane, L. (author), López, L.M.M. (author), Benti, B. (author), Dekeling, R. (author), Miller, P.J.O. (author)Modern long range anti-submarine warfare sonars transmit powerful sound pulses which might have a negative impact on marine mammals. Behavioral response studies (BRS) conducted by research groups in the US (the AUTEC project 2006-2009 (Tyack et al. 2011) and the SOCAL project 2010-2016 (Southall et al. 2012)) and in Norway (the Sea Mammals and...report 2018
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Binnerts, B. (author), Mulders, I. (author), Blom, K. (author), Colin, M. (author), Dol, H. (author)Autonomous Underwater Vehicles (AUVs) offer an automated solution for the collection of environmental data underwater. While they provide an effective solution in scenarios where their task is limited to basic sensor data collection, supervisory control by an operator is still needed to make more complicated decisions. Because raw data of camera...conference paper 2018
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- van Neer, P.L.M.J. (author), Piras, D. (author), Koek, W. (author), van Zwet, E. (author), Sadeghian, H. (author) conference paper 2017
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Jansen, H.W. (author), de Jong, C.A.F. (author)Thecontributionofshippingnoisetothebackground noise in the seas can be estimated by shipping noise maps. Noise maps can be made by applying appropriate modeling tools for underwater sound propagation and ship source levels to information on the acoustic environment and on the ship traffic in the area of the map. The development of reliable source...article 2017
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Pinto, J. (author), Ribeiro, M. (author), Giodini, S. (author), L'Hoir, P. (author), Sartore, A. (author), Giron-Sierra, J.M. (author), Braga, J. (author), Sousa, J. (author)In this paper we present the NECSAVE system which allows the control of heterogeneous unmanned vehicles under challenging environments by a single human operator by providing it with the desired highlevel objectives. The described software stack takes care of decomposing the high-level objectives into assignable tasks and (re)distributing the...conference paper 2017
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Liu, Z. (author), Htein, L. (author), Cheng, L.K. (author), Martina, Q. (author), Jansen, R. (author), Tam, H.Y. (author)In this paper, we present a miniature fluidic flow sensor based on a short fiber Bragg grating inscribed in a single mode fiber and heated by Co2+-doped multimode fibers. The proposed flow sensor was employed to measure the flow rates of oil and water, showing good sensitivity of 0.339 nm/(m/s) and 0.578 nm/(m/s) for water and oil, flowing at v ...article 2017
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van der Eerden, F.J.M. (author), Wessels, P.W. (author), Basten, T.G.H. (author), Botteldooren, D. (author), van Rentherghem, T. (author), de Coensel, B. (author)A long-term monitoring project, with 12 months of continuous operation time, is described where the sound sources within a large industrial area as well as the sound levels in the nearby residential area are measured. The sources in the industrial area may give rise to complaints from the neighboring residential areas, at several kilometers...conference paper 2017
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Bosschaart, C. (author), Jansen, H.W. (author), de Jong, C.A.F. (author), Basten, T. (author)A concept for underwater machinery noise mitigation of future civil and military ships is the application of a common deck structure, supporting multiple machines, which is installed on resilient mounts on the ship's foundation structure. TNO is addressing the availability and testing of tools to be able to set realistic targets for the radiated...conference paper 2017
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Volker, A.W.F. (author), van Neer, P.L.M.J. (author)Proper spatial sampling is critical for many applications. If the sampling criterion is not met, artifacts appear for example in images. Last year an iterative approach was presented using wave field extrapolation to interpolate spatially aliased signals. The main idea behind this approach is that after inverse wave field extrapolation the...conference paper 2017